题目内容
一Who ________ it be that is sitting under the tree?
一It ________ be Mr.Brown, but I'm not sure.
[ ]
A.may; must
B.may; can
C.need; should
D.can; may
答案:D
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题目内容
一Who ________ it be that is sitting under the tree?
一It ________ be Mr.Brown, but I'm not sure.
A.may; must
B.may; can
C.need; should
D.can; may